<!--
   Copyright 2024 The Google Research Authors.
  
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
  
       http://www.apache.org/licenses/LICENSE-2.0
  
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-->

<!DOCTYPE html>
<html>
  <head>
    <meta charset=utf-8>
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no">
    <title>SNeRG Viewer</title>
<style>
body {
  font-family: Helvetica, "Helvetica Neue", sans-serif;
  font-size: 18px;
  line-height: 1.3em;
  background: #FFF;
  padding: 20px;
  margin: 0;
  text-align: center;
}

#error {
  display: none;
  position: fixed;
  top: 20px; left: 20px; right: 20px; bottom: 20px;
  background: #444;
  padding: 8px;
  white-space: pre;
  color: #fff;
  font-family: monospace;
  font-weight: bold;
}

#info {
  font-size: 12px;
  bottom: 4px;
  left: 8px;
  position: absolute;
}

#fpsdisplay {
  display: inline-block;
}

#Loading {
  position: absolute;
  top: 4px;
  left: 8px;
}

#Loading h4 {
  margin: 0px;
}

#loading-container {
  width: 150px;
  height: 150px;
  padding: 0px;
  margin: -40px 0 0 -40px;
  position: absolute;
  top: 50%;
  left: 50%;
}

.loading-bgbox {
  position: absolute;
  width: 65px;
  height: 65px;
  background-color: #DDD;
  width: 65px;
  height: 65px;
}

#topleft {
  top: 5px;
  left: 5px;
}

#bottomleft {
  bottom: 5px;
  left: 5px;
}

#topright {
  top: 5px;
  right: 5px;
}

#bottomright {
  bottom: 5px;
  right: 5px;
}

#loading-indicator {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 65px;
  height: 65px;
  background-color: #999;
  animation-name: indicator;
  animation-duration: 5s;
  animation-iteration-count: infinite;
}

@keyframes indicator {
  0%   {top: 5px; left: 5px; }
  25%  {top: 5px; left: 80px; }
  50%  {top: 80px; left: 80px; }
  75%  {top: 80px; left: 5px; }
}

#viewspacecontainer {
  position: relative;
  text-align: left;
  display: none;
}

/* The main SNeRG view */
.view {
  margin: auto;
  border: 3px solid #000;
  overflow: hidden;
  transform-origin: top left;
  background: #fff;
}
</style>
</head>
<body>

<div id="canvas"></div>
<div id=error></div>

<div id="viewspacecontainer">
  <div id=info class=info>
    Frames per second: <div id="fpsdisplay"></div>
  </div>
  <div id="Loading">
    <h4>
    [Loading]
    <span id="texturergbprogress">RGBA images: 0/?</span>,
    <span id="texturefeaturesprogress">feature images: 0/?</span>
    </h4>
  </div>
  <div id="loading-container">
    <div id="topleft" class="loading-bgbox"></div>
    <div id="bottomleft" class="loading-bgbox"></div>
    <div id="topright" class="loading-bgbox"></div>
    <div id="bottomright" class="loading-bgbox"></div>
    <div id="loading-indicator"></div>
  </div>
  <div class=viewspace id="viewspace">
  </div>
</div>

<script src="https://unpkg.com/three@0.113.1/build/three.js"></script>
<script src="https://unpkg.com/three@0.113.1/examples/js/controls/OrbitControls.js"></script>
<script src="https://unpkg.com/png-js@1.0.0/zlib.js"></script>
<script src="https://unpkg.com/png-js@1.0.0/png.js"></script>
<script src="index.js"></script>
</body>
</html>
